FFmpeg
pixelutils_init.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "config.h"
20 
21 #include "pixelutils.h"
22 #include "cpu.h"
23 
24 int ff_pixelutils_sad_8x8_mmx(const uint8_t *src1, ptrdiff_t stride1,
25  const uint8_t *src2, ptrdiff_t stride2);
26 int ff_pixelutils_sad_8x8_mmxext(const uint8_t *src1, ptrdiff_t stride1,
27  const uint8_t *src2, ptrdiff_t stride2);
28 
29 int ff_pixelutils_sad_16x16_mmxext(const uint8_t *src1, ptrdiff_t stride1,
30  const uint8_t *src2, ptrdiff_t stride2);
31 int ff_pixelutils_sad_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
32  const uint8_t *src2, ptrdiff_t stride2);
33 int ff_pixelutils_sad_a_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
34  const uint8_t *src2, ptrdiff_t stride2);
35 int ff_pixelutils_sad_u_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
36  const uint8_t *src2, ptrdiff_t stride2);
37 
38 int ff_pixelutils_sad_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
39  const uint8_t *src2, ptrdiff_t stride2);
40 int ff_pixelutils_sad_a_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
41  const uint8_t *src2, ptrdiff_t stride2);
42 int ff_pixelutils_sad_u_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
43  const uint8_t *src2, ptrdiff_t stride2);
44 
45 int ff_pixelutils_sad_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
46  const uint8_t *src2, ptrdiff_t stride2);
47 int ff_pixelutils_sad_a_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
48  const uint8_t *src2, ptrdiff_t stride2);
49 int ff_pixelutils_sad_u_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
50  const uint8_t *src2, ptrdiff_t stride2);
51 
53 {
55 
56  if (EXTERNAL_MMX(cpu_flags)) {
58  }
59 
60  // The best way to use SSE2 would be to do 2 SADs in parallel,
61  // but we'd have to modify the pixelutils API to return SIMD functions.
62 
63  // It's probably not faster to shuffle data around
64  // to get two lines of 8 pixels into a single 16byte register,
65  // so just use the MMX 8x8 version even when SSE2 is available.
66  if (EXTERNAL_MMXEXT(cpu_flags)) {
69  }
70 
71  if (EXTERNAL_SSE2(cpu_flags)) {
72  switch (aligned) {
73  case 0: sad[3] = ff_pixelutils_sad_16x16_sse2; break; // src1 unaligned, src2 unaligned
74  case 1: sad[3] = ff_pixelutils_sad_u_16x16_sse2; break; // src1 aligned, src2 unaligned
75  case 2: sad[3] = ff_pixelutils_sad_a_16x16_sse2; break; // src1 aligned, src2 aligned
76  }
77  }
78 
79  if (EXTERNAL_SSE2(cpu_flags)) {
80  switch (aligned) {
81  case 0: sad[4] = ff_pixelutils_sad_32x32_sse2; break; // src1 unaligned, src2 unaligned
82  case 1: sad[4] = ff_pixelutils_sad_u_32x32_sse2; break; // src1 aligned, src2 unaligned
83  case 2: sad[4] = ff_pixelutils_sad_a_32x32_sse2; break; // src1 aligned, src2 aligned
84  }
85  }
86 
87  if (EXTERNAL_AVX2_FAST(cpu_flags)) {
88  switch (aligned) {
89  case 0: sad[4] = ff_pixelutils_sad_32x32_avx2; break; // src1 unaligned, src2 unaligned
90  case 1: sad[4] = ff_pixelutils_sad_u_32x32_avx2; break; // src1 aligned, src2 unaligned
91  case 2: sad[4] = ff_pixelutils_sad_a_32x32_avx2; break; // src1 aligned, src2 aligned
92  }
93  }
94 }
#define EXTERNAL_MMX(flags)
Definition: cpu.h:56
int ff_pixelutils_sad_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
static atomic_int cpu_flags
Definition: cpu.c:50
int ff_pixelutils_sad_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
uint8_t
int ff_pixelutils_sad_u_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
int ff_pixelutils_sad_16x16_mmxext(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
void ff_pixelutils_sad_init_x86(av_pixelutils_sad_fn *sad, int aligned)
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:59
static int aligned(int val)
Definition: dashdec.c:178
#define EXTERNAL_AVX2_FAST(flags)
Definition: cpu.h:79
int ff_pixelutils_sad_a_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
int ff_pixelutils_sad_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
int(* av_pixelutils_sad_fn)(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
Sum of abs(src1[x] - src2[x])
Definition: pixelutils.h:29
int ff_pixelutils_sad_u_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
int ff_pixelutils_sad_a_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
#define src1
Definition: h264pred.c:139
int ff_pixelutils_sad_a_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:93
int ff_pixelutils_sad_u_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
#define EXTERNAL_MMXEXT(flags)
Definition: cpu.h:57
int ff_pixelutils_sad_8x8_mmxext(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
int ff_pixelutils_sad_8x8_mmx(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)